Datasheet

 
  
 
SLVS423 A− MAY 2002 − REVISED SEPTEMBER 2002
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range, V
CC
= 6 V,
f
osc
= 500 kHz (unless otherwise noted) (continued)
oscillator
PARAMETER
TEST CONDITIONS
TL1454A
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
f
osc
Frequency C
T
= 120 pF, R
T
= 10 kΩ 500 kHz
Standard deviation of frequency 50 kHz
Frequency change with voltage V
CC
= 3.6 V to 20 V, T
A
= 25°C 10 kHz
Frequency change with temperature
T
A
= T
A(min)
to 25°C −2 ± 30
kHz
Frequency change with temperature
T
A
= 25°C to 85°C −10 ± 30
kHz
Maximum ramp voltage 1.8 V
Minimum ramp voltage 1.1 V
dead-time control (DTC)
PARAMETER
TEST CONDITIONS
TL1454A
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
V
IT
Input threshold voltage
Duty cycle = 0% 0.98 1.1 1.22
V
V
IT
Input threshold voltage
Duty cycle = 100%
0.38 0.5 0.62
V
V
I(latched)
Latched-mode input voltage 1.2 V
I
IB
Common-mode input bias current DTC1, IN1+ ≈ 1.2 V 4 µA
Latched-mode (source) current T
A
= 25°C −100 µA
error-amplifier
PARAMETER
TEST CONDITIONS
TL1454A
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
V
IO
Input offset voltage 6 mV
I
IO
Input offset current
V
O
= 1.25 V, V
IC
= 1.25 V
100 nA
I
IB
Input bias current
V
O
= 1.25 V,
V
IC
= 1.25 V
−160 −500 nA
V
ICR
Input voltage range V
CC
= 3.6 V to 20 V −0.2 to 1.40 V
A
V
Open-loop voltage gain R
FB
= 200 kΩ 70 80 dB
Unity-gain bandwidth 3 MHz
CMRR Common-mode rejection ratio 60 80 dB
V
OM(max)
Positive output voltage swing 2.3 2.43
V
V
OM(min)
Negative output voltage swing 0.63 0.8
V
I
O+
Output sink current V
ID
= −0.1 V, V
O
= 1.20 V 0.1 0.5 mA
I
O−
Output source current V
ID
= 0.1 V, V
O
= 1.80 V −45 −70 µA
output
PARAMETER
TEST CONDITIONS
TL1454A
UNIT
PARAMETER
TEST CONDITIONS
MIN TYP MAX
UNIT
I
O
= −8 mA V
CC
−2 4.5
V
OH
High-level output voltage
I
O
= −8 mA @ V
CC
= >10 V V
CC
−2.3 V
V
V
OH
High-level output voltage
I
O
= −40 mA
V
CC
−2 4.4
V
I
O
= 40 mA @ V
CC
= >10 V V
CC
−2.3 V
V
OL
Low-level output voltage
I
O
= 8 mA 0.1 0.4
V
V
OL
Low-level output voltage
I
O
= 40 mA
1.8 2.5
V
t
rv
Output voltage rise time
C
L
= 2000 pF,
T
A
= 25°C
220
ns
t
fv
Output voltage fall time
C
L
= 2000 pF,
T
A
= 25
°
C
220
ns